Guard for calendering-machines.



J. B. WAGG 65 J. A. JOHNSON.

GUARD FOR UALBNDERING MACHINES.

\ APPLIOATION FILED 00T. 4, 1913.

1,1 O2, 109, Patented June 30,1914.

@p mi? TIE- l Zine/176m STATES PATENT oFFIcE..

J'Aalrris n. WAGG ,AND JOHN 4a. .roH'NsoNi 'or 'armaron wrscbNsrN, Assrenns or ONE-THIRD To WILLIAM L. waere, or A PPLEToN, WISCONSIN;

GUARD FOR CALENIDIERIN(17-MACHINES.

Specication oflietters Patent. Patlltd'Jull' 30,1914.

Apbncauon area' october 4', :e131 smal no. 793,433.

To all it'm'ay concern: l l 4 Be' it known that we, JAMES f. WAGG and JOHN A. JOHNSON, citizens of ,tlie United l 1s. extremely simplein its construction, and,

States, residing at Appleton, inthe county of Outagamie and State of Wisconsin, have invented n ,w and useful Improvementsun `Guards for Calendering-lllachines, of which the following is a specification. ,l

The present invention relates to calendering machines, and it propOSeSwbley, *u* f ,i

trated 1n the accompanying drawing, whereattachment fory machines of the class or char-I acter indicated which is designed to preventI Y injury to the workmen during manipulation ot the paper. c In thetypes of calendering machlne 1n general use, a series of alternating chilled iron and paper-filled rolls are mounted in superposed relation in vertical standards, t0 torni what is ordinarily termed the stack, it being the duty of certain mill operatives to pass the webs of paper by hand'through' these'rolls to'irnpar't the desired high iinlshL thereto` and as the rolls are of very eolisiderable size and Weight, there is always danger' ot the operatives hands or fin ers being caught between the rolls and crus ed. It has been proposed to protect the operatives by equipping the stacks with specially constructed doctors, which, in addition to their usual function of preventing adhesion of theI paper to the rolls. serve to soine'extent as guards by being extended partly over the rolls; but in actual practice these vices have proven objectionable and unsatisfactory, since the blade portions thereof are liable to injure the delicate surfaces of the paper-filled rolls.

To overcome the defect justspeoified, and, at the same time, to provide coniplete protection for the operatives, we contemplate n, in accordance with our invention, a series of guards in the 'form of straps which are located at the nip of the rolls, where the paper is ted inwardly, and are so constructed as to provide for the easy passage of the paper between the rolls, while effec- 'tively preventing entrance of the hands or fingers therebetween.

lVe also contemplate a further improvement tor the guards in that we provide them with sight openings which are disposed e'xar'tly in line with the nip of the rolls` when the guards are iu place, and thus enable the operativ'ea lo examine the surface contact ol the paper with the rolls, a

rifeature'whichwas impossible with the doctor-guards.

F lnally, we aim to provide a guard which therefore, capable of being manufactured at An embodiment of theinvention is'illus- Figure l is a fragmental front elevation of a calendering machine equipped with the .improved guards; Fig. 2 is a vertical sect'ion taken on line 2-2 of Fig. l; and Fig. 3

is a perspectiveview of one of the guards.

The calendermg machine depicted in the said drawing is of conventional type and,v

therefore, requires no extended description.

f'lt'clonsists, as is usual, of alternating chilled iron and paper-filled'rolls 5' and Gmounted iii superposed relation in vertical standards 7 and 8, and constituting the staclc'the rolls being rotated through the agency of suitable driving mechanism, (not shown). The paper web 9 is fed through the stack by the operatives, and passes over and between the rolls in the ordinary manner.

The improved guards 10, which present Ithe most important features of the invention, as previously stated, are located at the points where the paper passes inwardly through the nips of adjacent rolls. They are here represented as consisting, each, of a metal strap, which is arranged in horizontal position between the standards and is bolted or otherwise fastened to the inner faces thereof at its laterally-bent ends 1.1. The body portion 12 of the strap is of V- or anglesection, as shown in Fig. 2, the V or angle projecting inwardly toward the nip of the rolls and having its apex or ridge line directly opposite and parallel with the line of nip. The two wings or members resulting from this formation are of equal width, and are bowed or curved outwardly away from the rolls, thereby providing a space through which the paper can readily pass betwecnthe rolls, while yet completely preventing the hands or fingers of the operatives from being drawn therebetween. To enable the surface contact of the paper with the rolls to be observed, each guard is provided with a longitudinal sight. opening tuswhich is formed therein at the ridge or apex of the V, so as to exactly parallel the nip of the rolls. In the construction illustrated, the opening is shown as comprising a series of three alining slots 13, but it is obvious that such number is purely 'arbitrary, and may be either increased or de- Vcreased. As the'paper is fed betweenthe rolls, first in one direction kand then in, the

other, alternately, it will be understood that the guards are arranged at both sides of the 1. A guard for calendering machine rolls adapted for arrangement opposite the nip of adjacent rolls and having a sight opening formed through it.

f A guard for calendering machine rolls adapted for arrangement opposite the nip of adjacent rolls and having a sight opening iormed-through vit which directly parallels machine rolls incarica ment opposite the nip of adjacent rolls andl embodying upper and lower longitudinal wings disposed at an angle to each other, the apex of which angle projects inwardly toward the said nip, one of said wings ex tending4 overv the adjacent roll and being curved outwardly away from the saine.

5. A guard for calendering machine, rollsl ,comprising a' strap adapted for arrangement oppositethe nip of adjacent rolle and embodying upper and lower longitudinal wings disposed at an angle to each other, the apex of the angle projecting inwardly toward' the said nip, and being formed with a longitudinal sight opening which parallels the said nip.

6. A ard for calendering lgachine rolls comprising a. strapn adapti for arrangement opposite the nip 'of adjacent rolls and having a ,lody portion of angleor l/-section which projects inwardly toward the said-'-y and is vprovided with a sight opening.

ln testimony whereof we have hereuntoy seteur hands 'in presence of two subscribing witnesses.

L j .iA-.Mns n@ wane.

"1g Witnesses:

FnaNorsS. Berrow,- G. McDononen. 

